Process of extracting precious metals from ores.



- of the gold isnecessary and is mostgenerally deposits.

UNITED sTATEs PA n T onsron ISIDOR KITSEE, or PHILADELPHIh, PENNSYLVANIA.

. rnocnssor nx'rnnc'rme PRECIOUS METALS FROM onus.

Specification of. Letters Patent.

Application filed. August 24, 1907. Serial No. 390,029.

To all whom it may concern: v Be it known that I, Isrnon KITSEE, citiz of the United States, residing at Philadgl phia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Processes of EX- tractingPrecious Metals from Ores, of which the following is aspecification.

My invention relates to the process of ex-- tracting precious metals from. their natural To-day; precious metals, such for instance as gold, are extracted from their ores most generally by means of a solution of-cyanid' In this process, 'thesimultaneous oxidation effected by the action ofairupon the solution. M

apparatus, in which a compound is electrolyzed, carrying the radical chlorin, is inter: mixed with the contents of the positive cornpartment of an electrolytic apparatus, in which a compound is. electrolyzed, carrying the'radic'al nitrogen, this miXt-ure can be successfully employed in extracting such precious metals as gold, etc-., from their ores.

For practicaFmd economical reasons, I prefer to use in one of the electrolytic apparat-uses, a chlorid of sodium, and in the second of said apparatuses, a nitrate of potassium. The proportions may differ, but I had I of to-dayinclude invariably power plants,- 7

good results by using about equal proportionsof each of the solutions.

When it is considered that mining outfits the use of a small dynamo, suchfor instance as is used in the art of electi'o-plating, would -I claim as new and desire to secure by .Let

I have discovered that if the contents-of the positive compartment of an electrolytic not add greatly to the running expense and, therefore, the process above outlined is deemed cheaper than the process of cyanid mg.

Having now described my invention,what

ters Patent is I '1. The process of extracting precious metal from its deposit, consisting in sub 'ectactionf'oi two solutions; one solution cont aining thecontents of the positive compartment of an electrolytic apparatus, in which a chlorincompound has been electrolyzed, and

the secondsolution containing the contents of: the positive compartmentof an electro- IPatented July 28,1908.

ing'the metal carrying 'ore to the dissolving lytic apparatus, inwhich a nitrogen compound has been electrolyzed.

2. The'process of extract-mg gold from its ores, consisting in subjecting the ores to the I ESZDQR KITSEE.

Witnesses EDITH R. STILLEY, MARY C. SMITH. 

